一、定义Form表单对象

VideoInfoForm.java

package com.guli.edu.form;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;
/**
 * @author helen
 * @since 2019/3/5
 */
@ApiModel(value = "课时基本信息", description = "编辑课时基本信息的表单对象")
@Data
public class VideoInfoForm {
    @ApiModelProperty(value = "视频ID")
    private String id;
    @ApiModelProperty(value = "节点名称")
    private String title;
    @ApiModelProperty(value = "课程ID")
    private String courseId;
    @ApiModelProperty(value = "章节ID")
    private String chapterId;
    @ApiModelProperty(value = "视频资源")
    private String videoSourceId;
    @ApiModelProperty(value = "显示排序")
    private Integer sort;
    @ApiModelProperty(value = "是否可以试听：0默认 1免费")
    private Boolean free;
}

二、课时保存

1、web层接口的定义

VideoAdminController.java

package com.guli.edu.controller.admin;
@Api(description="课时管理")
@CrossOrigin //跨域
@RestController
@RequestMapping("/admin/edu/video")
public class VideoAdminController {
    @Autowired
    private VideoService videoService;
    @ApiOperation(value = "新增课时")
    @PostMapping("save-video-info")
    public R save(
            @ApiParam(name = "videoForm", value = "课时对象", required = true)
            @RequestBody VideoInfoForm videoInfoForm){
        videoService.saveVideoInfo(videoInfoForm);
        return R.ok();
    }
}

2、业务层

VideoService.java

void saveVideoInfo(VideoInfoForm videoInfoForm);

VideoServiceImpl.java

@Override
public void saveVideoInfo(VideoInfoForm videoInfoForm) {
    Video video = new Video();
    BeanUtils.copyProperties(videoInfoForm, video);
    boolean result = this.save(video);
    if(!result){
        throw new GuliException(20001, "课时信息保存失败");
    }
}

三、课时的修改

1、web层接口的定义

VideoAdminController.java

@ApiOperation(value = "根据ID查询课时")
@GetMapping("video-info/{id}")
public R getVideInfoById(
    @ApiParam(name = "id", value = "课时ID", required = true)
    @PathVariable String id){
    VideoInfoForm videoInfoForm = videoService.getVideoInfoFormById(id);
    return R.ok().data("item", videoInfoForm);
}
@ApiOperation(value = "更新课时")
@PutMapping("update-video-info/{id}")
public R updateCourseInfoById(
    @ApiParam(name = "VideoInfoForm", value = "课时基本信息", required = true)
    @RequestBody VideoInfoForm videoInfoForm,
    @ApiParam(name = "id", value = "课时ID", required = true)
    @PathVariable String id){
    videoService.updateVideoInfoById(videoInfoForm);
    return R.ok();
}

2、业务层

VideoService.java

VideoInfoForm getVideoInfoFormById(String id);
void updateVideoInfoById(VideoInfoForm videoInfoForm);

VideoServiceImpl.java

@Override
public VideoInfoForm getVideoInfoFormById(String id) {
    //从video表中取数据
    Video video = this.getById(id);
    if(video == null){
        throw new GuliException(20001, "数据不存在");
    }
    //创建videoInfoForm对象
    VideoInfoForm videoInfoForm = new VideoInfoForm();
    BeanUtils.copyProperties(video, videoInfoForm);
    return videoInfoForm;
}
@Override
public void updateVideoInfoById(VideoInfoForm videoInfoForm) {
    //保存课时基本信息
    Video video = new Video();
    BeanUtils.copyProperties(videoInfoForm, video);
    boolean result = this.updateById(video);
    if(!result){
        throw new GuliException(20001, "课时信息保存失败");
    }
}

四、课时的删除

1、web层接口的定义

VideoAdminController.java

@ApiOperation(value = "根据ID删除课时")
@DeleteMapping("{id}")
public R removeById(
    @ApiParam(name = "id", value = "课时ID", required = true)
    @PathVariable String id){
    boolean result = videoService.removeVideoById(id);
    if(result){
        return R.ok();
    }else{
        return R.error().message("删除失败");
    }
}

2、业务层

VideoService.java

boolean removeVideoById(String id);

VideoServiceImpl.java

@Override
public boolean removeVideoById(String id) {
    //删除视频资源 TODO
    Integer result = baseMapper.deleteById(id);
    return null != result && result > 0;
}